Do you stick to recipes when cooking/preparing food spontaneously?

Generally yes, unless I know a good substitute. Not like those people, "Hey, this recipe sucks. I used gluten free tortillas instead of rice, canned tuna instead of grilled beef, and grass from the lawn instead of peppers. Author should be ashamed."

Depends if it is something I'm familiar with. Temperature probe if I'm cooking joints of meat but otherwise I can normally tell if it is cooked okay.

Yes, I do because I am under the assumption that the ones that wrote it know better than I do.